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public class FooToBarConverter : ITypeConverter<Foo, Bar>
{
    public Bar Convert(Foo source, Bar destination, ResolutionContext context)
    {
        if (source == null)
            return null;
            
        if (destination == null)
            destination = new Bar();
            
        destination.Name = source.Name;
        destination.Fullname = "Mr." + source.Name;
        
        return destination;
    }
}